請問用MetaTrader 4移動止損怎麽編寫，請外匯高手幫壹下忙

if(TrailingStop>0)

{

if(Bid-OrderOpenPrice()>Point*TrailingStop)

{if(OrderStopLoss()<Bid-Point*TrailingStop){OrderModify(OrderTicket(),OrderOpenPrice(),Bid-Point*TrailingStop,OrderTakeProfit(),0,Green)

;return(0);

}

}

}

}

//mt4裏的 example 就有追蹤止損代碼